Supplier compliance and cybersecurity: a practical guide to managing risk and securing your ecosystem

Companies, more connected than ever, now depend heavily on their suppliers. This collaboration, however, exposes them to increased risks, particularly in terms of cybersecurity. Supplier compliance has become a priority for companies seeking to protect their sensitive data and prevent potential cyberattacks. But what exactly is supplier compliance?

What is supplier compliance in cybersecurity?

Supplier compliance in cybersecurity refers to all the rules, standards and practices that companies must impose on their suppliers to guarantee the security of their IT systems and the protection of information. This includes measures such as risk assessment, security audits, third-party management and the inclusion of specific clauses in contracts. To guarantee this compliance, companies must be proactive and adopt a rigorous approach.

But compliance is not just a constraint. For a supplier, demonstrated cybersecurity maturity becomes a lever for commercial differentiation: beyond simple checks, large clients value partners that are able to prove their level of security (sector benchmark, label, continuous improvement). Turning compliance into a competitive advantage opens new doors with new customers.

The key regulations that affect supplier compliance

NIS 2: a framework for third-party management

The NIS 2 Directive (Network and Information Systems Directive) imposes strict requirements in terms of supplier management and cybersecurity. This European regulation aims to improve the resilience of critical systems, including those of suppliers, against cyber threats. The compliance obligation extends to suppliers that take part in the supply chain of essential and important entities, such as those in the energy, telecommunications or financial services sectors.

This directive requires the entities concerned to put in place risk management measures that cover the security of their supply chain, including their relationships with their suppliers. The assessment of supplier-related risks thus becomes a strategic priority for ensuring optimal security all along the chain.

GDPR and supplier compliance

The General Data Protection Regulation (GDPR) is not limited to the company’s own management of personal data. It also applies to the third parties with which an organisation shares its information. Suppliers that process data must comply with GDPR requirements, or face severe penalties.

Assessing suppliers on their ability to comply with GDPR is therefore crucial to avoid data leaks or breaches of privacy. Companies must make sure that suppliers have adequate security measures to protect personal information. It is important to formalise this obligation in detailed contracts, including specific clauses to guarantee GDPR compliance.

ISO 27001: building third-party management into your ISMS

The ISO 27001 standard is an international reference for information security management (ISMS). It requires companies to manage the risks related to suppliers within their management system. To be compliant with this standard, organisations must assess the cybersecurity practices of their suppliers, guarantee the protection of sensitive data, and implement security controls that are suited to their risks.

Obtaining ISO 27001 certification is a mark of seriousness and rigour in the management of risks related to cybersecurity, including the management of third parties. It strengthens the company’s credibility in the eyes of its customers and partners by demonstrating that robust processes are in place to prevent and respond to cyber threats.

What are the cybersecurity risks related to suppliers?

Suppliers are a crucial link in companies’ security, but they also represent a potential entry point for cyberattacks. What are the main risks?

Supplier-related security risks can take several forms. For example, a non-compliant supplier can become the target of an attack, thereby exposing sensitive or critical information belonging to its customers. The risks include:

• Leaks of personal or sensitive data, in particular data protected by GDPR.
• Supply chain attacks, in which cybercriminals exploit suppliers’ vulnerabilities to infiltrate the main company.
• Problems of compliance with security standards, such as the ISO 27001 standard or the requirements of the NIS 2 Directive.

It is essential to learn from past incidents in order to anticipate risks better. A striking example is the SolarWinds attack in 2020, which brought to light the weaknesses of the supply chain. Hackers compromised a software update from SolarWinds, a major provider of IT solutions, which gave them access to the systems of several large companies and government bodies. This incident showed how important it is to assess suppliers’ security continuously.

How to assess your suppliers’ cybersecurity compliance?

To ensure effective management of third-party risks, it is essential to put in place a rigorous assessment of your suppliers’ cybersecurity compliance.

Setting up a supplier security audit

A supplier security audit is a process that makes it possible to assess your partners’ ability to protect sensitive information. This audit must include several stages:

• Assessment of the supplier’s information security policies.
• Verification of certifications (ISO 27001) and of GDPR compliance.
• Vulnerability tests and risk analysis.

The purpose of this audit is to make sure that the supplier meets regulatory requirements and has the security measures needed to protect sensitive information.

Criteria for assessing suppliers in terms of cybersecurity

When assessing your suppliers, it is important to take several key criteria into account:

• Certifications: an ISO 27001 certification is a good indicator that the supplier has a reliable information security management system.
• Security policies: make sure that the supplier has solid internal policies to protect data and systems.
• Incident management practices: it is essential that the supplier has a well-established incident response plan to limit the damage in the event of a cyberattack.

Best practices for effective supplier risk management

Centralising third-party management with a SaaS tool

Supplier risk management can quickly become complex if it is not well organised. A SaaS tool dedicated to managing third-party compliance can be a strategic solution for ensuring centralised and effective tracking. These platforms enable companies to monitor their partners’ compliance in real time and to put corrective actions in place when security requirements are not met.

The advantages of such a tool include:

• Real-time tracking: you can monitor your suppliers’ compliance status at any time.
• Action history: a SaaS tool keeps a history of audits, assessments and non-conformities, which makes it possible to maintain a reliable record.
• Simplified communication: collaboration with suppliers is made easier through a single platform, allowing better management of projects and corrective actions.

Using a SaaS solution makes it possible to relieve the pressure on teams and to become more efficient, while improving visibility and control over supplier-related risks.

Continuous supplier monitoring and periodic audits

Cybersecurity is a dynamic discipline, in which threats evolve quickly. A single audit of your suppliers is therefore not enough. Continuous monitoring, combined with periodic audits, is essential to make sure that your partners remain compliant and secure.

Here are a few good practices for ensuring regular monitoring:

• Set up quarterly or annual audits: this makes it possible to check that suppliers still meet the security requirements that have been defined.
• Carry out vulnerability tests: this makes it possible to identify any new security flaw quickly.
• Use compliance dashboards: a good dashboard provides an overview of each supplier’s performance, thereby facilitating proactive risk management.

This regular monitoring not only protects your organisation, but also strengthens your relationships with your suppliers by ensuring transparent collaboration.

In conclusion, supplier compliance in cybersecurity must not be neglected. It is an essential pillar of your strategy for protecting data and securing your supply chain. Effective supplier management rests on several key elements:

• A rigorous assessment of third parties before any commitment.
• The implementation of clear contracts, including specific security clauses.
• Continuous monitoring of cybersecurity performance, with regular audits.
• The use of SaaS tools to facilitate centralised management and collaboration.

By adopting these good practices, companies can better protect their data, reduce the risk of cyberattacks and strengthen their resilience against growing threats.

FAQ on supplier compliance and cybersecurity